Learning with games

Hey, I recently started to learn japanese and wanted to focus more on comprehension and pronounciation so I believe games could come in handy,

a question I have though is for example:

What are the chances of speaking like a yakuza member when I learn it through games like ryo ga gotoku?

Or is there no problem? The pronounciation sounds comprehensible, I'm able to pick up on some words here and there and it's a little motivating to say the least

by EvilEmpireEnjoyer